Another question Nelson, if we want the circuit at unity gain, we would be using R1 & R2 as voltage dividers like for the previous version? What values for R1 & R2 do you recommend?
Thanks,
Pete
If you only need nominal unity gain, the ratio becomes about 10:1 of R1/R2.
If you want exactly, you would have to measure then gain and use a calculator.
If you want exactly, you would have to measure then gain and use a calculator.
Will R1 = 47K and R2 = 4.7K be OK? I'm not sure what the relationship of R1 & R2 are to R5 for unity gain.
Pardon me...
I'm Interested in unity gain, too, but not sure if I get this right:
according to the doc, R1/R2 is 1:47 and this is going to be 10:1, is that correct?
Thank you
David
I'm Interested in unity gain, too, but not sure if I get this right:
according to the doc, R1/R2 is 1:47 and this is going to be 10:1, is that correct?
Thank you
David
Any guesstimate when the kits will be available in the store? I admit I'm lazy. I want to just order a kit. But I don't even see a way to buy a PCB even if I get motivated at this point.
My error. You want about 10 dB attenuation, which is about 3 to 1.
R1 at 22k and r2 at 10k is more like it.
R1 at 22k and r2 at 10k is more like it.
Question about power supply
First off, a big hats off and thank you to Nelson for creating this and giving it (very literally) to us. Amazing.
To keep the good karma going I will make a donation to our food bank. Some family will be eating a little better thanks to your generosity.
I have a question about the power supply. The notes say that the power supply does not need to be "very accurate or quiet."
Is there an ideal range of voltage?
Thanks!
First off, a big hats off and thank you to Nelson for creating this and giving it (very literally) to us. Amazing.
To keep the good karma going I will make a donation to our food bank. Some family will be eating a little better thanks to your generosity.
I have a question about the power supply. The notes say that the power supply does not need to be "very accurate or quiet."
Is there an ideal range of voltage?
Thanks!
I would aim for the average between these two extreme values.
Your wisdom has concluded that 12v is a universal power source 😀
I think I'm gonna order the extra parts required for unity gain too, and experiment with mine!
I think I'm gonna order the extra parts required for unity gain too, and experiment with mine!
Can someone point out the IDSS measurement for this specific version to pick the right J113 jfet and the resistors too? I know it is in the kit form that has been graciously shared by Papa but if I want to measure and pick myself I would like to do that as well.
Its such a simple circuit I can do point to point wiring 🙂
Thanks
Its such a simple circuit I can do point to point wiring 🙂
Thanks